From f9f890ba2b13ea9ccfffd0e7354c7b64d9109790 Mon Sep 17 00:00:00 2001 From: Serge Semin Date: Thu, 30 Jul 2020 18:28:01 +0300 Subject: [PATCH] gpio: dwapb: Add max GPIOs macro Add a new macro DWAPB_MAX_GPIOS which defines the maximum possible number of GPIO lines corresponding to the maximum DW APB GPIO controller port width. Use the new macro instead of number literal 32 where it's applicable. Suggested-by: Andy Shevchenko Signed-off-by: Serge Semin Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20200730152808.2955-5-Sergey.Semin@baikalelectronics.ru Signed-off-by: Linus Walleij --- drivers/gpio/gpio-dwapb.c | 8 ++++---- include/linux/platform_data/gpio-dwapb.h | 4 +++- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c index 30812132..f340011 100644 --- a/drivers/gpio/gpio-dwapb.c +++ b/drivers/gpio/gpio-dwapb.c @@ -162,7 +162,7 @@ static struct dwapb_gpio_port *dwapb_offs_to_port(struct dwapb_gpio *gpio, unsig for (i = 0; i < gpio->nr_ports; i++) { port = &gpio->ports[i]; - if (port->idx == offs / 32) + if (port->idx == offs / DWAPB_MAX_GPIOS) return port; } @@ -182,7 +182,7 @@ static void dwapb_toggle_trigger(struct dwapb_gpio *gpio, unsigned int offs) pol = dwapb_read(gpio, GPIO_INT_POLARITY); /* Just read the current value right out of the data register */ - val = gc->get(gc, offs % 32); + val = gc->get(gc, offs % DWAPB_MAX_GPIOS); if (val) pol &= ~BIT(offs); else @@ -197,7 +197,7 @@ static u32 dwapb_do_irq(struct dwapb_gpio *gpio) irq_hw_number_t hwirq; irq_status = dwapb_read(gpio, GPIO_INTSTATUS); - for_each_set_bit(hwirq, &irq_status, 32) { + for_each_set_bit(hwirq, &irq_status, DWAPB_MAX_GPIOS) { int gpio_irq = irq_find_mapping(gpio->domain, hwirq); u32 irq_type = irq_get_trigger_type(gpio_irq); @@ -599,7 +599,7 @@ static struct dwapb_platform_data *dwapb_gpio_get_pdata(struct device *dev) dev_info(dev, "failed to get number of gpios for port%d\n", i); - pp->ngpio = 32; + pp->ngpio = DWAPB_MAX_GPIOS; } pp->irq_shared = false; diff --git a/include/linux/platform_data/gpio-dwapb.h b/include/linux/platform_data/gpio-dwapb.h index ff1be73..0aa5c67 100644 --- a/include/linux/platform_data/gpio-dwapb.h +++ b/include/linux/platform_data/gpio-dwapb.h @@ -6,12 +6,14 @@ #ifndef GPIO_DW_APB_H #define GPIO_DW_APB_H +#define DWAPB_MAX_GPIOS 32 + struct dwapb_port_property { struct fwnode_handle *fwnode; unsigned int idx; unsigned int ngpio; unsigned int gpio_base; - int irq[32]; + int irq[DWAPB_MAX_GPIOS]; bool irq_shared; }; -- 2.7.4